'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title || 'vue Element Admin' // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following method:
// port = 9527 npm run dev OR npm run dev --port = 9527
const port = process.env.port || process.env.npm_config_port || 8080 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,

  devServer: {
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    }
    // proxy: {
    // change xxx-api/login => mock/login
    // detail: https://cli.vuejs.org/config/#devserver-proxy
    // [process.env.VUE_APP_BASE_API]: {
    //   target: `http://127.0.0.1:${port}/mock`,
    //   changeOrigin: true,
    //   pathRewrite: {
    //     ['^' + process.env.VUE_APP_BASE_API]: ''
    //   }
    // }
    // },
    // before: require('./mock/mock-server.js')
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    externals: {
      // 'vue': 'Vue',
      // 'vue-router': 'VueRouter',
      // 'vuex': 'Vuex',
    },
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
    // transpileDependencies: [
    //   'vue-echarts',
    //   'resize-detector'
    // ]
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    // config.plugins.delete('preload')

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch')

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    // set preserveWhitespace
    config.module
      .rule('vue')
      .use('vue-loader')
      .loader('vue-loader')
      .tap(options => {
        options.compilerOptions.preserveWhitespace = true
        return options
      })
      .end()

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
              // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial' // only package third parties that are initially dependent
                },
                elementUI: {
                  name: 'chunk-elementUI', // split elementUI into a single package
                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            })
          config.optimization.runtimeChunk('single')
        }
      )
    config.plugin('define').tap((definitions) => {
      definitions[0]['process.env']['PACKAGE_VERSION'] = JSON.stringify(require('./package.json').version);
      definitions[0]['process.env']['PACKAGE_BUILDTIME'] = (new Date().Format("yyyyMMddHHmm"));
      return definitions;
    });
  }
}

Date.prototype.Format = function(fmt) {
  var o = {
    "M+": this.getMonth() + 1,
    "d+": this.getDate(),
    "H+": this.getHours(),
    "m+": this.getMinutes(),
    "s+": this.getSeconds(),
    "S+": this.getMilliseconds()
  };
  // 因为date.getFullYear()出来的结果是number类型的,所以为了让结果变成字符串型，下面有两种方法：
  if (/(y+)/.test(fmt)) {
    // 第一种：利用字符串连接符“+”给date.getFullYear()+""，加一个空字符串便可以将number类型转换成字符串。
    fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
  }
  for (var k in o) {
    if (new RegExp("(" + k + ")").test(fmt)) {
      // 第二种：使用String()类型进行强制数据类型转换String(date.getFullYear())，这种更容易理解。
      fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(String(o[k]).length)));
    }
  }
  return fmt;
};
